The Shelter

Double-Wall (DW) Shelter

Hikers seeking a versatile shelter system will appreciate this shelter’s two-piece design. Carry only what you need for your adventure. Use the net-tent on its own on nice nights, or just bring the tarp when insects aren’t a concern. For full protection, use the two together. The double-wall design promotes airflow to keep condensation at a minimum.

Versatile, 2-piece design.
Dual entry from the front or the side
Tub-floor walls taper outward for extra elbow room
8" tub-floor
Compact footprint
Interior stash pocket and hang loop for your odds and ends.
Lineloc tensioners at tie-outs for easy pitch adjustment (removable).
UHMWPE Core guyline with reflective tracer included.

What you get

When you purchase the DW system, you get our 1P Cirriform Tarp and 1P Bug Shelter at a lower cost than buying the pieces individually. Additionally, the rigging to connect the inner to the fly comes pre-installed, and we provide an additional stuff sack that fits both items. You can find more details about each item in the provided links.

Dual Entry

The Cirriform DW offers entry from the front or the side. Changing the entry is as easy as moving a clip from one side of the tarp's zipper to the other. The side-entry makes getting in and out of your shelter a breeze, while the front-entry is best used when it's raining to avoid exposing the sleeping area to precipitation. On clear nights, we love leaving the side tied back for views of the stars.

Trekking pole supported

Designed to use your trekking poles for support, the Cirriform DW is best pitched with poles set to about 44" (112cm) at the front and 33" (84cm) at the rear, though longer poles can work at the rear too. (Note: shown with Bug Bivy.)

Optional pole sets are available here for those who prefer to travel without trekking poles.

Materials

The Cirriform is made from recycled 20D polyester fabric with a silicone based coating on both sides. Compared to nylon, "Silpoly" retains less water and won't sag when the temperature drops, helping to retain a taut pitch through the night.

The Bug Shelter floor is made from 20D polyester fabric with a silicone coating on the outer face and PU coating on the inner face. While this fabric comes with a small weight penalty, the PU coating increases the puncture resistance of the floor while also providing increased waterproofness and a little less slipperyness. No-see-um netting keeps out the smallest critters.

Seam Sealing
Note that the seams of both the fly and tub floor should be sealed prior to use with a sealer for silicone coated fabrics. You can do this yourself or use our sealing service. Sealer is available here, and more information is available on our seam sealing page.

Rainfly made in Vietnam
Inner made in USA from imported materials

Specifications

Specifications

Itemized weight:

Rain fly: 11.7 oz | 332g
Net-tent: 10.6 oz | 301g
Rigging: 2.3 oz | 64 g
Stuff sacks (3): 1.0 oz | 28 g
Total: 25.6 oz | 725 g
Note: Some stuff sacks and rigging can be omitted or changed to reduce weight.

Materials:

Rain fly: 20D Recycled SilPoly - silicone coating, both sides
Floor: 20D SilPoly/PU - silicone coating on outer face; PU coating on inner face
Netting: 0.6 oz No-see-um
Guyline: UHMWPE Core

Dimensions:

Packed size: ~10" x 7" x 3" | ~25cm x 18cm x 8cm
Interior length: 88" | 223 cm
Interior height @ head: 42" - 22" | 107 cm - 56 cm (head - foot)
Interior width at ground level: 36" - 28" | 86cm - 66cm (head - foot)
Interior width at top of tub: 38" - 30" | 96cm - 76cm (head - foot)
Height of tub: 8" | 20cm

Required items:

Trekking poles: ~112cm @ front, ~84cm @ rear (longer rear pole is ok)
Stakes: 7 (9 for better wind stability)
(Poles and stakes are not included.)

Pitching

I appreciate your patience while I update the instructions for this shelter. In the meantime, here are resources that will help you get started:

Current instructions for the 1P Cirriform
Pitching video 1P Cirriform
Current instructions for the 1P Bug Shelter
Instructions for an earlier version of the DW System

Shelters